Next heat pump generation for retrofit buildings
GreenHP aims at developing and highlighting the potential of heat pumps for retrofitting buildings in urban areas. It addresses key features of future heat pump technology, which include the use of low global warming potential (GWP) refrigerants, advanced component design for minimum environmental impact and intelligent system integration with a focus on smart power grids.
GreenHP follows the following research approach:
1) System level: interaction with smart electric grids, other energy systems and components as well as control of different system components
2) Heat pump unit: developing, assembling and testing of a 30 kW lab-scale air/water pilot heat pump under stationary and transient conditions
3) Component level: Refrigerant: charge reduction and the use of refrigerants with low GWP
Compressor: modulating compressor with a large turndown ratio and low oil charge
Evaporator: brazed aluminum micro-channel heat exchanger with high performance fin designs offering good defrosting and optimized refrigerant flow distribution
Condensator: brazed aluminum shell and tube heat exchangers based on MPE tubes
Compressor: modulating compressor with a large turndown ratio and low oil charge
Fan and air duct: high efficiency, low noise air duct for the evaporator including an advanced fan concept
Project start: December 2012
Project duration: 45 months
Project partners
- AIT Austrian Institute of Technology (Coordinator)
- Fraunhofer Institute for Solar Energy Systems, Germany
- Kungliga Tekniska Högskolan (KTH), Sweden
- Hesch Schröder GmbH, Germany
- Emerson Climate Technologies GmbH, Germany
- Ziehl-Abegg AG, Germany
- SAPA AB, Sweden
- AKG Gruppe, Germany
- Eurpean Heat Pump Association, Belgium
Funding line: This project is financed by funds of the European Commission and is implemented within the framework of FP7-ENERGY-2012-1.
AIT contact: Andreas Zottl
Links to publications: Final Report
Further information on the project can be found here.
